{"id":365,"date":"2024-01-26T11:15:20","date_gmt":"2022-11-25T13:39:14","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e4%bd%bf%e7%94%a8kotlin%e7%bc%96%e5%86%99%e7%9a%84android%e4%b8%8b%e6%8b%89%e5%88%97%e8%a1%a8%e6%8e%a7%e4%bb%b6\/"},"modified":"2025-08-02T01:54:52","modified_gmt":"2025-08-01T17:54:52","slug":"%e4%bd%bf%e7%94%a8kotlin%e7%bc%96%e5%86%99%e7%9a%84android%e4%b8%8b%e6%8b%89%e5%88%97%e8%a1%a8%e6%8e%a7%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8kotlin%e7%bc%96%e5%86%99%e7%9a%84android%e4%b8%8b%e6%8b%89%e5%88%97%e8%a1%a8%e6%8e%a7%e4%bb%b6\/","title":{"rendered":"Kotlin\u5b9e\u73b0Android\u81ea\u5b9a\u4e49\u4e0b\u62c9\u5217\u8868\u63a7\u4ef6\uff1a\u5b8c\u6574\u6559\u7a0b\u4e0e\u4ee3\u7801\u793a\u4f8b"},"content":{"rendered":"<p>\u5728\u8fd9\u4e2a\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528Kotlin\u8ba8\u8bba\u548c\u5b9e\u73b0Android\u5e94\u7528\u4e2d\u7684Spinner\uff08\u4e0b\u62c9\u5217\u8868\uff09\u3002Android Spinner\u7528\u4e8e\u5728\u5c4f\u5e55\u4e0a\u521b\u5efa\u4e0b\u62c9\u5217\u8868\u3002<\/p>\n<p>\u4f60\u5c06\u5b66\u4e60\u4ec0\u4e48\uff1f<\/p>\n<ul class=\"post-ul\">\n<li>\u901a\u8fc7XML\u548c\u7f16\u7a0b\u65b9\u5f0f\u521b\u5efaSpinner<\/li>\n<li>\u5728Spinner\u4e0a\u8bbe\u7f6e\u63d0\u793a<\/li>\n<li>\u4e3aSpinner\u521b\u5efa\u81ea\u5b9a\u4e49\u5e03\u5c40<\/li>\n<li>\u5904\u7406\u70b9\u51fb\u76d1\u542c\u5668\u5e76\u663e\u793aToast\u6d88\u606f<\/li>\n<li>\u9632\u6b62\u70b9\u51fb\u76d1\u542c\u5668\u7b2c\u4e00\u6b21\u81ea\u52a8\u89e6\u53d1<\/li>\n<\/ul>\n<h2>Android Spinner\u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>Spinner\u7c7b\u4f3c\u4e8e\u5305\u542b\u4e00\u4e2a\u9009\u62e9\u9879\u76ee\u5217\u8868\u7684\u4e0b\u62c9\u83dc\u5355\u3002\u9009\u62e9\u4e00\u4e2a\u503c\u540e\uff0cSpinner\u5c06\u8fd4\u56de\u5230\u5176\u9ed8\u8ba4\u72b6\u6001\uff0c\u5e76\u663e\u793a\u6240\u9009\u7684\u503c\u3002\u5728Android 3.0\u4e4b\u540e\uff0c\u65e0\u6cd5\u5728Spinner\u7684\u9ed8\u8ba4\u72b6\u6001\u4e2d\u663e\u793a\u63d0\u793a\u4fe1\u606f\uff0c\u800c\u662f\u663e\u793a\u7b2c\u4e00\u4e2a\u9879\u76ee\u3002Spinner\u4e2d\u7684\u6570\u636e\u7531\u9002\u914d\u5668\u52a0\u8f7d\u3002\u60f3\u8c61\u4e00\u4e0b\u4ee5\u4e0b\u60c5\u666f\uff1a\u5047\u8bbe\u60a8\u9700\u8981\u7ed9\u624b\u673a\u5145\u7535\u3002\u4e3a\u6b64\uff0c\u60a8\u5fc5\u987b\u4f7f\u7528\u9002\u914d\u5668\u5c06\u624b\u673a\u5145\u7535\u5668\u8fde\u63a5\u5230\u7535\u529b\u63d2\u5ea7\u3002\u7136\u540e\u9002\u914d\u5668\u63d0\u4f9b\u7535\u529b\u7ed9\u60a8\u7684\u624b\u673a\u3002\u5728Android\u4e2d\uff0cSpinner\u5c31\u50cf\u60a8\u7684\u624b\u673a\uff0c\u4f7f\u7528\u9002\u914d\u5668\u52a0\u8f7d\u6570\u636e\u3002\u9002\u914d\u5668\u8bbe\u7f6e\u6570\u636e\u4ee5\u53ca\u8981\u52a0\u8f7d\u5230Spinner\u4e2d\u7684\u9879\u76ee\u7684\u5e03\u5c40\u3002<\/p>\n<h2>Spinner\u56de\u8c03\u4e8b\u4ef6<\/h2>\n<p>AdapterView.OnItemSelectedListener\u63a5\u53e3\u7528\u4e8e\u89e6\u53d1Spinner\u70b9\u51fb\u4e8b\u4ef6\u7684\u56de\u8c03\u3002\u5b83\u5305\u542b\u4e24\u4e2a\u65b9\u6cd5\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>onItemSelected\uff08\u9879\u76ee\u9009\u4e2d\uff09<\/li>\n<li>onNothingSelected\uff08\u672a\u9009\u4e2d\u4efb\u4f55\u9879\u76ee\uff09<\/li>\n<\/ul>\n<p>\u5728\u63a5\u4e0b\u6765\u7684\u90e8\u5206\u4e2d\uff0c\u6211\u4eec\u5c06\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Android Studio\u9879\u76ee\uff0c\u5e76\u5728\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5b9e\u73b0Spinner\u3002\u6211\u4eec\u5c06\u81ea\u5b9a\u4e49\u5e03\u5c40\uff0c\u5e76\u5b66\u4e60\u5982\u4f55\u5904\u7406\u4e0d\u540c\u7684\u60c5\u666f\u3002<\/p>\n<h2>Android\u4e0b\u62c9\u83dc\u5355\u7684Kotlin\u9879\u76ee<\/h2>\n<div><img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/656484bca4b2f92e6c730283\/10-0.png\" class=\"post-images\" alt=\"android spinner kotlin\" title=\"Android Spinner Kotlin\u793a\u4f8b\"><\/div>\n<h3>1. XML\u5e03\u5c40\u4ee3\u7801<\/h3>\n<p>\u4ee5\u4e0b\u662factivity_main.xml\u5e03\u5c40\u6587\u4ef6\u7684\u4ee3\u7801\u3002<\/p>\n<pre class=\"post-pre\"><code>&lt;?xml version=\"1.0\" encoding=\"utf-8\"?&gt;\r\n&lt;LinearLayout xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"\r\n    xmlns:tools=\"http:\/\/schemas.android.com\/tools\"\r\n    android:layout_width=\"match_parent\"\r\n    android:layout_height=\"match_parent\"\r\n    android:orientation=\"vertical\"\r\n    android:id=\"@+id\/linearLayout\"\r\n    android:gravity=\"center\"\r\n    tools:context=\".MainActivity\"&gt;\r\n\r\n    &lt;Spinner\r\n        android:id=\"@+id\/mySpinner\"\r\n        android:layout_width=\"match_parent\"\r\n        android:spinnerMode=\"dialog\"\r\n        android:layout_height=\"wrap_content\" \/&gt;\r\n\r\n&lt;\/LinearLayout&gt;\r\n<\/code><\/pre>\n<p>\u76ee\u524d\u5b83\u53ea\u80fd\u627f\u8f7d\u4e00\u4e2aSpinner\uff0c\u5176\u4e2dandroid:spinnerMode\u53ef\u4ee5\u9009\u62e9dialog\uff08\u5bf9\u8bdd\u6846\uff09\u6216dropdown\uff08\u4e0b\u62c9\uff09\u4e24\u79cd\u6a21\u5f0f\u4e4b\u4e00\u3002<\/p>\n<p>\u8981\u663e\u793a\u63d0\u793a\uff0c\u60a8\u5e94\u8be5\u5c06spinnerMode\u7684\u503c\u8bbe\u7f6e\u4e3adialog\u3002<\/p>\n<h3>2. Spinner XML \u4ee3\u7801<\/h3>\n<p>\u4e0b\u9762\u7ed9\u51fa\u4e86spinner_right_aligned.xml\u7684\u4ee3\u7801\u3002<\/p>\n<pre class=\"post-pre\"><code>&lt;?xml version=\"1.0\" encoding=\"utf-8\"?&gt;\r\n&lt;TextView xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"\r\n    android:id=\"@+id\/textView\"\r\n    android:layout_width=\"match_parent\"\r\n    android:layout_height=\"wrap_content\"\r\n    android:gravity=\"end\"\r\n    android:padding=\"15dp\"\r\n    android:textAlignment=\"gravity\"\r\n    android:textColor=\"@color\/colorPrimary\"\r\n    android:textSize=\"16sp\"\r\n    \/&gt;\r\n<\/code><\/pre>\n<h3>3. \u4e3b\u6d3b\u52a8\u7684Kotlin\u4ee3\u7801<\/h3>\n<p>\u4ee5\u4e0b\u662fMainActivity.kt\u7c7b\u7684\u4ee3\u7801\u3002<\/p>\n<pre class=\"post-pre\"><code>package net.androidly.androidspinnerkotlin\r\n\r\nimport android.content.Context\r\nimport android.support.v7.app.AppCompatActivity\r\nimport android.os.Bundle\r\nimport android.view.Gravity\r\nimport android.view.View\r\nimport android.widget.*\r\nimport kotlinx.android.synthetic.main.activity_main.*\r\n\r\nclass MainActivity : AppCompatActivity(), AdapterView.OnItemSelectedListener {\r\n\r\n\r\n    var languages = arrayOf(\"Java\", \"PHP\", \"Kotlin\", \"Javascript\", \"Python\", \"Swift\")\r\n    val NEW_SPINNER_ID = 1\r\n\r\n    override fun onCreate(savedInstanceState: Bundle?) {\r\n        super.onCreate(savedInstanceState)\r\n        setContentView(R.layout.activity_main)\r\n\r\n\r\n        var aa = ArrayAdapter(this, android.R.layout.simple_spinner_item, languages)\r\n        aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)\r\n\r\n        with(mySpinner)\r\n        {\r\n            adapter = aa\r\n            setSelection(0, false)\r\n            onItemSelectedListener = this@MainActivity\r\n            prompt = \"\u9009\u62e9\u4f60\u559c\u6b22\u7684\u7f16\u7a0b\u8bed\u8a00\"\r\n            gravity = Gravity.CENTER\r\n\r\n        }\r\n\r\n        val spinner = Spinner(this)\r\n        spinner.id = NEW_SPINNER_ID\r\n\r\n        val ll = LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT)\r\n\r\n        ll.setMargins(10, 40, 10, 10)\r\n        linearLayout.addView(spinner)\r\n\r\n        aa = ArrayAdapter(this, R.layout.spinner_right_aligned, languages)\r\n        aa.setDropDownViewResource(R.layout.spinner_right_aligned)\r\n\r\n        with(spinner)\r\n        {\r\n            adapter = aa\r\n            setSelection(0, false)\r\n            onItemSelectedListener = this@MainActivity\r\n            layoutParams = ll\r\n            prompt = \"\u9009\u62e9\u4f60\u559c\u6b22\u7684\u7f16\u7a0b\u8bed\u8a00\"\r\n            setPopupBackgroundResource(R.color.material_grey_600)\r\n\r\n        }\r\n\r\n    }\r\n\r\n    override fun onNothingSelected(parent: AdapterView&lt;*&gt;?) {\r\n        showToast(message = \"\u672a\u9009\u62e9\u4efb\u4f55\u9879\u76ee\")\r\n    }\r\n\r\n    override fun onItemSelected(parent: AdapterView&lt;*&gt;?, view: View?, position: Int, id: Long) {\r\n\r\n        when (view?.id) {\r\n            1 -&gt; showToast(message = \"Spinner 2 \u4f4d\u7f6e\uff1a${position}\uff0c\u8bed\u8a00\uff1a${languages[position]}\")\r\n            else -&gt; {\r\n                showToast(message = \"Spinner 1 \u4f4d\u7f6e\uff1a${position}\uff0c\u8bed\u8a00\uff1a${languages[position]}\")\r\n            }\r\n        }\r\n    }\r\n\r\n    private fun showToast(context: Context = applicationContext, message: String, duration: Int = Toast.LENGTH_LONG) {\r\n        Toast.makeText(context, message, duration).show()\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u91cd\u8981\u89c2\u70b9\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>\u611f\u8c22Kotlin Android\u6269\u5c55\uff0cXML Spinner\u63a7\u4ef6\u5728\u6211\u4eec\u7684Kotlin Activity\u7c7b\u4e2d\u81ea\u52a8\u53ef\u7528\u3002<\/li>\n<li>\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u7f16\u7a0b\u8bed\u8a00\u7684\u5b57\u7b26\u4e32\u6570\u7ec4\u3002\u8fd9\u4e9b\u6570\u636e\u901a\u8fc7ArrayAdapter\u586b\u5145\u5230\u9002\u914d\u5668\u4e2d\u3002<\/li>\n<li>setDropDownViewResource\u7528\u4e8e\u8bbe\u7f6e\u9009\u4e2d\u72b6\u6001\u548cSpinner\u5217\u8868\u884c\u7684\u5e03\u5c40\u3002<\/li>\n<li>android.R.layout.simple_spinner_item\u7528\u4e8e\u8bbe\u7f6e\u9ed8\u8ba4\u7684Android SDK\u5e03\u5c40\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cTextView\u5728\u6b64\u7c7b\u578b\u5e03\u5c40\u4e2d\u662f\u5de6\u5bf9\u9f50\u7684\u3002<\/li>\n<\/ul>\n<p>\u6211\u4eec\u901a\u8fc7\u7f16\u7a0b\u65b9\u5f0f\u521b\u5efa\u4e86\u7b2c\u4e8c\u4e2aSpinner\uff0c\u8be5Spinner\u4ecespinner_right_aligned.xml\u6587\u4ef6\u4e2d\u52a0\u8f7d\u5e03\u5c40\u3002<\/p>\n<p>\u5f53Activity\u88ab\u521b\u5efa\u65f6\uff0c\u4f7f\u7528setSelection(0, false)\u53ef\u4ee5\u9632\u6b62Spinner\u7684OnItemSelected\u65b9\u6cd5\u89e6\u53d1\u3002<\/p>\n<p>\u8fd9\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff1fsetSelection()\u65b9\u6cd5\u544a\u8bc9Activity\u7b2c\u4e00\u4e2a\u4e0b\u62c9\u83dc\u5355\u9879\u5df2\u7ecf\u88ab\u9009\u62e9\u3002\u6211\u4eec\u5fc5\u987b\u5c06\u8fd9\u4e2a\u8bed\u53e5\u653e\u5728onItemSelectedListener = this\u4e4b\u524d\u3002setPopupBackgroundResource\u7528\u4e8e\u8bbe\u7f6e\u4e0b\u62c9\u5217\u8868\u7684\u80cc\u666f\u989c\u8272\u3002\u5728onItemSelected\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528when\u8bed\u53e5\u89e6\u53d1\u76f8\u5e94Spinner\u9879\u7684Toast\u6d88\u606f\u3002\u591a\u4e8f\u4e86Kotlin\u548c\u5e26\u6709\u9ed8\u8ba4\u503c\u7684\u51fd\u6570\uff0c\u6211\u4eec\u51cf\u5c11\u4e86\u5bf9Toast\u7684\u5197\u957f\u8c03\u7528\u3002<\/p>\n<h3>4. Kotlin\u5e94\u7528\u7a0b\u5e8f\u7684\u8f93\u51fa\u7ed3\u679c<\/h3>\n<div><img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/656484bca4b2f92e6c730283\/28-0.gif\" class=\"post-images\" alt=\"android spinner kotlin output\" title=\"Android Spinner Kotlin\u8f93\u51fa\u7ed3\u679c\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u8fd9\u4e2a\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528Kotlin\u8ba8\u8bba\u548c\u5b9e\u73b0Android\u5e94\u7528\u4e2d\u7684Spinner\uff08\u4e0b\u62c9\u5217\u8868\uff09\u3002Android [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[900,897,1207,1206,1071],"class_list":["post-365","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-android","tag-kotlin","tag-ui","tag-1206","tag-1071"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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